CVE-2026-93225 Linux CVE debrief

Who should care

Linux kernel developers and maintainers, Linux distribution maintainers, and users of affected Linux kernel versions should assess exposure and verify probe failure and driver removal cleanup paths.

Why it matters

A typec switch leak vulnerability in the Linux kernel's phy: fsl-imx8mq-usb component requires verification of probe failure and driver removal cleanup paths to prevent potential denial of service.

• Verification of probe failure and driver removal cleanup paths is required to prevent typec switch leaks
• Potential denial of service due to typec switch leaks

Technical summary

The Linux kernel's phy: fsl-imx8mq-usb component has a typec switch leak vulnerability. When probe fails after imx95_usb_phy_get_tca() succeeds, the typec switch leaks because the only cleanup path was in .remove(), which never runs on probe failure. This was resolved by using devm_add_action_or_reset() to ensure the switch is cleaned up on both probe failure and driver removal. Affected Linux kernel developers and maintainers should assess exposure and verify probe failure and driver removal cleanup paths to prevent potential denial of service.

Defensive priority

Medium

Recommended defensive actions

• Review and update Linux kernel phy: fsl-imx8mq-usb component to ensure devm_add_action_or_reset() is used
• Verify probe failure and driver removal cleanup paths
• Monitor for potential typec switch leaks
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The vulnerability was resolved by using devm_add_action_or_reset() to ensure the switch is cleaned up on both probe failure and driver removal. Evidence is limited to source-provided CVE metadata and NVD vulnerability assessment. Defenders should verify probe failure and driver removal cleanup paths to prevent potential typec switch leaks.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.